发明授权
US09294618B2 Call-back to a UE that has made an emergency call via a visited IMS network
有权
通过被访问的IMS网络回拨已经进行紧急呼叫的UE
- 专利标题: Call-back to a UE that has made an emergency call via a visited IMS network
- 专利标题(中): 通过被访问的IMS网络回拨已经进行紧急呼叫的UE
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申请号: US14390462申请日: 2013-03-15
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公开(公告)号: US09294618B2公开(公告)日: 2016-03-22
- 发明人: Ralf Keller , Fredrik Lindholm
- 申请人: Ralf Keller , Fredrik Lindholm
- 申请人地址: SE Stockholm
- 专利权人: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
- 当前专利权人: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
- 当前专利权人地址: SE Stockholm
- 代理机构: NDWE LLP
- 国际申请: PCT/SE2013/050281 WO 20130315
- 国际公布: WO2013/151484 WO 20131010
- 主分类号: H04M3/42
- IPC分类号: H04M3/42 ; H04L29/06 ; H04M3/51 ; H04W4/22 ; H04W76/00 ; H04M1/725 ; H04M7/00 ; H04M11/04 ; H04W8/12
摘要:
Exemplary methods for establishing an emergency call and an emergency call-back for a first User Equipment (UE) communicatively coupled to a visited Internet Protocol Multimedia Subsystem (IMS) network includes establishing an emergency call by the first UE sending an emergency call request to a Proxy Call Session Control Function (P-CSCF) in the visited IMS network. The methods further include providing, from the P-CSCF to a Serving CSCF (S-CSCF) in a home IMS network for the first UE, information comprising an indication that the emergency call has been performed and an equipment identifier of the first UE. The methods further include receiving, in the S-CSCF, an emergency call-back request from an emergency call-center, and using, in the S-CSCF, information comprised in the received emergency call-back and the information provided by the P-CSCF, to route the emergency call-back to the first UE and/or to a second UE.
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